I had a 65Amp early toyota truck Alternator that I put oversized pully on to reduce drag and drop charge voltage down from 14.8 vdc to 12.5vdc.
Well that finally went bad and I went back to the 85amp KIA unit 2 weeks ago.
3 days ago I discovered every time car restarts that alternator does too.
It explains why im not getting the advantage from my larger diameter tires.
And why pulse and glide engine off has shown even lower than that mpg.
Explained : I averaged 35mpg B4 tire changed and Alt swap.
This dropped to 32mpg and Ive built that back up to 34mpg avg.
But instead I shoulda seen 37 - 39 mpg.
My best mpg tank was 35.5 and that was into the wind both ways with under inflated front tires.
Difference here no P&G just steady throttle for 30 miles each way.
And no diddnt use My Alternator deactivation switch untill now.
My Alternator was Taxing the engine at 14 stop sign restarts each way, Plus Key off coast downs.
These are my big fuel saving points.
I would like to make others aware of this possibillity in thier own car but everybody mistakes my post for some dummy doesnt know how to install an alternator LOL.
Im much deeper than that LMAO.